the dotplots below show the amounts of money the same group of 30 shoppers spent on groceries in october and…

the dotplots below show the amounts of money the same group of 30 shoppers spent on groceries in october and in december. amounts are rounded to the nearest ten dollars. part a calculate the median of each distribution. october median: december median:

the dotplots below show the amounts of money the same group of 30 shoppers spent on groceries in october and in december. amounts are rounded to the nearest ten dollars. part a calculate the median of each distribution. october median: december median:

Answer

Explanation:

Step1: Count the number of data points

For October: Count the number of dots. There are 30 data points. For December: Count the number of dots. There are 30 data points.

Step2: Find the median position

Since (n = 30) (even), the median is the average of the (\frac{n}{2})th and ((\frac{n}{2}+ 1))th values. (\frac{n}{2}=15), (\frac{n}{2}+1 = 16)

Step3: Locate the 15th and 16th values for October

Count the dots from left - to - right. The 15th and 16th values (when ordered) are both (180). The median for October is (\frac{180 + 180}{2}=180)

Step4: Locate the 15th and 16th values for December

Count the dots from left - to - right. The 15th value is (200) and the 16th value is (200). The median for December is (\frac{200+200}{2}=200)

Answer:

October Median: (180) December Median: (200)